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Why Your Power BI Refresh Fails (Then Randomly Works as if Nothing Happened)

If your refresh works “sometimes,” you don’t have a system—you have uncertainty.

Author

Glenda Carnate
April 03, 2026

Read time: 2.5 minutes

Here’s the uncomfortable truth: Power BI refresh problems are not coincidences. You simply do not have complete control of the system from beginning to end.

You accurately set up your dataset, credentials, and gateway. Everything appears to be in order, but the scheduled refresh has failed again when reset, and you have done nothing to change this. Later, seemingly by chance, it has worked.

Even though there has been no change, the outcome has been different. This therefore demonstrates how unreliable the system is... it is vulnerable, and you are being reactive rather than controlling it.

So, you want to stop doing refresh roulette?

1. Manage Your Data Sources:
The more unstable your inputs are, the higher the chances of failure.
• Standardize your connections.
• Don't create inconsistent APIs/files.

2. Improve Gateway Reliability:
Gateway issues are usually the source cause of the issues.
• Ensure your gateway is always "on" and up-to-date.
• Always scrutinize your connectivity health.

3. Simplify Your Model:
Complex pipeline architectures fail more often.
• Reduce your heavy changes.
• Move your reasoning upstream whenever possible.

4. Secure Your Credentials:
Quiet negligence often stems from credential issues.
• Regularly re-authenticate your sources.
• Utilize the same access settings across systems.

5. Plan Your Schedule Accordingly:
Timing can play a significant role in the success of the refresh.
• Avoid your peak loads.
• Stagger out your refresh schedules.

💡Key Takeaway: 

When your refresh fails most of the time, it isn’t a failure... it is simply the system's ability to be lucky sometimes.

👉 LIKE if you have ever had a successful refresh with "no reason".

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👉 Follow Glenda Carnate to learn more about building systems that work.

👉 COMMENT below with your most frustrating refresh issue.

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